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2 years ago

What is the value of 4(a + 7) + 2a?when a = - 1.8?

Mathematics

1 answer:

ale4655 [162]2 years ago

6 0

Answer:

17.2

Step-by-step explanation:

4(a+7) + 2a

4(-1.8 + 7) 2(-1.8)

-7.2+28-3.6

-10.8+28

17.2

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If Cos 30° equals rad 3/2 then the sin 60° equals a) 0 b) 1/2 c) rad 3/2 d) 1

vovangra [49]

Answer:

c) rad 3/2

Step-by-step explanation:

If Cos 30° equals rad 3/2 then the sin 60° equals rad 3/2.

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4 years ago

Could anybody help me (pic attached)

RideAnS [48]

Answer: 4/3

Step-by-step explanation:

What are the corresponding sides?

4 and 3

8 and 6

9 and 6.75

This is very easy, just make a fraction

4/3 = 4/3

8/6 = 4/3

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3 years ago

Translate the phrase into an expression: 8 times the sum of 7 and y

Daniel [21]

Answer:

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Step-by-step explanation:

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4 years ago

Read 2 more answers

Find the solution to the system of equations. x+y+z=23 y+z=14 z=9

Ne4ueva [31]

A) x+y+z=23
B) y+z=14
C) z=9
Since z = 9 then
A) x + y = 14
B) y = 5
A) x + y+ z=23
A) x + 5 + 9 = 23
A) x = 9

3 0

3 years ago

Triangle MNP has side lengths 3.5 cm, 4.1 cm, and 4.3 cm. A triangle with what side lengths would be similar to triangle MNP?

atroni [7]

Answer:

Option 1,

The triangle MNP is similar to the triangle with side lengths 35 cm, 41 cm, 43 cm

Step-by-step explanation:

Given triangle MNP has side lengths 3.5 cm, 4.1 cm, and 4.3 cm. we have to find the similarity triangle sides from the given option.

As we know, the two triangles are similar if the measures of the corresponding sides of two triangles are proportional.

For the first option: 35 cm, 41 cm, 43 cm

$\frac{3.5}{4.1}=\frac{4.1}{41}=\frac{4.3}{43}=\frac{1}{10}$

which shows that the sides are proportional.

we have to choose only one option ∴ we needn't have to check the others

Hence, the triangle MNP is similar to the triangle with side lengths 35 cm, 41 cm, 43 cm

6 0

3 years ago